设计和合成 60°树枝状给体配体及其配位驱动的自组装超分子菱形金属树状大分子。

Design and synthesis of 60° dendritic donor ligands and their coordination-driven self-assembly into supramolecular rhomboidal metallodendrimers.

机构信息

Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, PR China.

出版信息

J Org Chem. 2011 Dec 2;76(23):9660-9. doi: 10.1021/jo201594u. Epub 2011 Nov 3.

DOI:10.1021/jo201594u

PMID:22032269

Abstract

The design and self-assembly of novel rhomboidal metallodendrimers via coordination-driven self-assembly is described. By employing newly designed 60° ditopic donor linkers substituted with Fréchet-type dendrons and appropriate 120° rigid di-Pt(II) acceptor subunits, a variety of [G-1]-[G-3] rhomboidal metallodendrimers with well-defined shape and size were prepared under mild conditions in high yields. The supramolecular metallodendrimers were characterized with multinuclear NMR ((1)H and (31)P), mass spectrometry (CSI-TOF-MS), and elemental analysis. Isotopically resolved mass spectrometry data support the existence of the metallodendrimers with rhomboidal cavities, and NMR data were consistent with the formation of all ensembles. The shape and size of all rhomboidal metallodendrimers were investigated with the PM6 semiempirical molecular orbital method.

摘要

通过配位驱动自组装，设计并自组装了新颖的菱形金属树状大分子。通过采用新设计的带有 Fréchet 型树枝状大分子的 60°双位点给体链接子和适当的 120°刚性双-Pt(II)受体亚基，在温和条件下高产率地制备了具有明确形状和尺寸的各种[G-1]-[G-3]菱形金属树状大分子。超分子金属树状大分子通过多核 NMR((1)H 和(31)P)、质谱(CSI-TOF-MS)和元素分析进行了表征。同位素分辨质谱数据支持具有菱形空腔的金属树状大分子的存在，并且 NMR 数据与所有配合物的形成一致。使用 PM6 半经验分子轨道方法研究了所有菱形金属树状大分子的形状和尺寸。